Results 1 to 10 of about 9,279 (262)
Numerical simulation of rock breaking by PDC bit in hot dry rocks
Natural Gas Industry B, 2019 Penetrating through hot dry rocks for geothermal resources with high geothermal gradients, high degrees of hardness and abrasivity will be extremely difficult, and a reasonable tooth distribution is a key factor to improve its rock-breaking efficiency.
Xiaohua Zhu
exaly +4 more sources
Thermal Characteristics of Borehole Stability Drilling in Hot Dry Rock. [PDF]
ACS Omega, 2021 Due to high temperature of formation and low temperature of the drilling fluid while drilling in the hot dry rock, thermal stress around the borehole is easy to appear. The thermal stress causes cracks in the borehole wall. In severe cases, the cracks caused borehole instability and lost-circulation.
Zhu Z, Wang C, Guan Z, Lei W.
europepmc +5 more sources
Hot Dry Rock Geothermal Exploration in Australia [PDF]
ASEG Extended Abstracts, 2004 Hot dry rock (HDR) geothermal energy is obtained by circulating water between injection and production wells through hot subsurface rocks. The recovered hot water should be around 250°C for efficient electricity generation. South Australia has become a focus for HDR developments due to its exceptionally hot subsurface rocks.
Richard R Hillis, Martin Hand
exaly +2 more sources
Hot dry rock: Widespread but invisible
Eos, Transactions American Geophysical Union, 1977 Exploration for hot dry rock (HDR) as a potential geothermal resource presents some novel problems and unusual contradictions not to be expected in exploration for other geological resources. This became apparent at a meeting held on June 22, 1976, at Los Alamos Scientific Laboratory (LASL) on t he subject of Exploration Methods for Hot Dry Rock ...
F. G. West, T. J. Shankland
openaire +1 more source
Hot-dry-rock feasibility study [PDF]
, 1981 The hot-dry-rock project tasks are covered as follows: hot-dry-rock reservoir; generation facilities; water resources; transmission requirements; environmental issues; government and community institutional factors; leasing, ownership and management of facilities; regulations, permits, and laws; and financial considerations. (MHR)
openaire +2 more sources
Acord 1-26 hot, dry well, Roosevelt Hot Springs hot dry rock prospect, Utah [PDF]
, 1983 The Acord 1-26 well is a hot, dry well peripheral to the Roosevelt Hot Springs known geothermal resource area (KGRA) in southwestern Utah. The bottom-hole temperature in this 3854-m-deep well is 230/sup 0/C, and the thermal gradient is 54/sup 0/C/km. The basal 685 m, comprised of biotite monzonite and quartz schist and gneiss, is a likely hot, dry rock
Shannon, S.S. Jr. +5 more
openaire +2 more sources
Eos, Transactions American Geophysical Union, 1979 The concept is almost as simple as extracting free heat from the sun. Any geophysicist knows of the geothermal gradient and has thought at one time that eventually geothermal heat will have to be tapped as a source of energy. To quote a brochure published by the Los Alamos Scientific Laboratory (LASL), ‘Naturally heated rock in the earth's crust is one
openaire +1 more source
Hot dry rock energy: Hot dry rock geothermal development program. Progress report. Fiscal year 1993 [PDF]
, 1995 Extended flow testing at the Fenton Hill Hot Dry Rock (HDR) test facility concluded in Fiscal Year 1993 with the completion of Phase 2 of the long-term flow test (LTFT) program. As is reported in detail in this report, the second phase of the LTFT, although only 55 days in duration, confirmed in every way the encouraging test results of the 112-day ...
Salazar, J., Brown, M.
openaire +2 more sources
Mechanical Characteristics and Permeability Characteristics of Dry-Hot Rock Mass
Journal of Environmental and Public Health, 2023 As a rock mass with shallow burial, high temperature, and large-scale development, the study of its mechanical and seepage characteristics plays an important role in the efficient development of geothermal energy. With the development of geothermal energy in China, a breakthrough has been made in the exploration of dry-hot rocks, and the realization of
Dong Yang +4 more
openaire +2 more sources
Mathematical model of a Hot Dry Rock system [PDF]
Geophysical Journal International, 1991 SUMMARY We derive a mathematical model which can be used to determine the evolution of the temperature in a Hot Dry Rock system. The essential feature of this approach is given by the fact that the solution is available by analytical methods. Therefore, long-term predictions of the evolution of the temperature as well as a detailed study concerning the
Heuer, Norbert +2 more
openaire +2 more sources